upgrade problems with PTP100 7.3.6

I am trying to upload 13.1.2 into some P8 boards with 7.3.6 firmware.  The job could not be finished and now they are in never-never land.  What can I do at this point?  Gary

Wow, that's a big step. Sometimes it's better to take some intermediate steps when dealing with such huge gaps in firmware revs. What happens when you use a reset plug, can you access them at the default IP? Do you even get an ethernet link? At this point anything with a P8 board in it has to be many years past warranty... so yeah, you might be SOL.

Let us know if you need help upgrading from 7.3.6